酚醛胶泥使用的粘合剂是( )。
A．次氯酸纳B．酚醛树脂C．二氯乙烷D．氟硅酸纳
参考答案：B
—Does Mr Hill have a bad cold?
—________. He can't go to school until next week. [ ]
A. I think so
B. I think it
C. I think not
D. I don't think so.
太平洋的南北划分界限在哪里？
